| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
151
|
Fri Aug 16 15:31:17 2013 |
Koji | Optics | Configuration | Mirror list for OMC(002) | OMC(002)
Cavity Mirrors
FM1 (input coupler): A9 |
|
|
101
|
Mon Apr 8 11:29:08 2013 |
Koji | Optics | Characterization | Mirror/PZT Characterization links |
Mirror
List
http://nodus.ligo.caltech.edu:8080/OMC_Lab/152 |
|
|
179
|
Fri Feb 28 19:50:11 2014 |
Koji | General | General | Misalignment ABCD matrix for the aLIGO OMC | Relationship between mirror misalignment
and cavity mode shift was calculated.
The technique described in T0900647 |
|
|
216
|
Tue Aug 5 13:03:25 2014 |
Koji | General | General | Missing cable components | DCPD Connector Face: Qty2 https://dcc.ligo.org/LIGO-D1201276
QPD Connector Face: Qty2 https://dcc.ligo.org/LIGO-D1201282
PD faster: 92210A07 Qty 4: MCMASTER |
|
|
559
|
Wed Jul 12 17:27:44 2023 |
Koji | General | General | Mitsutoyo Digital Caliper (100mm) | We had missing digital caliper from the
clean room. As it is an essential component,
I have ordered a replacement. |
|
|
95
|
Thu Apr 4 01:35:04 2013 |
Koji | Optics | Characterization | Mode matching to the OMC cavity | The fiber output was matched with the lenses
on a small bread board.
The detailed configuration is found |
|
|
8
|
Wed Jul 18 23:20:13 2012 |
Koji | Optics | Characterization | Mode scan results of ELIGO | Nic Smith sent me a bunch of elog lists
where the results of the mode scan can be
found. |
|
|
305
|
Wed Aug 8 17:32:56 2018 |
Rich Abbott | General | Characterization | Modulation Index Test Setup at 40m Lab | Attached is a block diagram of the test
setup used in the 40m lab to measure the
modulation index of the IO modulator |
|
|
306
|
Thu Aug 9 11:24:29 2018 |
Koji | General | Characterization | Modulation Index Test Setup at 40m Lab | [Rich Koji]
The impedances of the new LLO EOM
were measured with the beat note setup at |
|
|
308
|
Sun Sep 23 19:42:21 2018 |
Koji | Optics | General | Montecarlo simulation of the phase difference between P and S pols for a modeled HR mirror | [Koji Gautam]
With Gautam's help,
I ran a coating design code for an HR mirror |
|
|
309
|
Thu Sep 27 20:19:15 2018 |
Aaron | Optics | General | Montecarlo simulation of the phase difference between P and S pols for a modeled HR mirror | I started some analytic calculations of
how OMC mirror motion would add to the noise
in the BHD. I want to make some prettier |
|
|
310
|
Thu Nov 1 19:57:32 2018 |
Aaron | Optics | General | Montecarlo simulation of the phase difference between P and S pols for a modeled HR mirror | I'm still not satisfied/done with the
solution to this, but this has gone too long
without an update and anyway probably someone |
|
|
100
|
Mon Apr 8 11:11:37 2013 |
Koji | Optics | Characterization | More Mirror T measurement | More Ts of the mirrors were measured.
A mirror specification:
Request: 8300+/-800 ppm |
|
|
42
|
Mon Nov 26 01:40:00 2012 |
Koji | Optics | Characterization | More RoC measurement | C1: RoC: 2.57845 +/− 4.2e−05m
|
|
|
182
|
Thu Apr 17 21:39:25 2014 |
Koji | Optics | General | More alignment | STORY:
- The cavity mirrors have scattering
spots. The cavity alignment should have been |
|
|
260
|
Tue Apr 5 21:20:15 2016 |
Koji | Electronics | Characterization | More dark noise measurement | All survived PDs have been measured. |
|
|
64
|
Wed Feb 27 18:18:48 2013 |
Koji | Optics | Configuration | More perpendicularity test | Mounting Prisms:
(criteria: 30arcsec = 145urad =>
0.36mm spot shift) |
|
|
65
|
Fri Mar 1 23:06:15 2013 |
Koji | Optics | Configuration | More perpendicularity test final | Perpendicularity of the "E" mirror
was measured.
Mounting Prisms: |
|
|
243
|
Thu Sep 10 04:03:42 2015 |
Koji | Optics | Characterization | More polarizer optics measurement (Summary) | Brewster calcite PBS (eLIGO
Squeezer OFI)
Loss L = 3600 +/- 200ppm |
|
|
244
|
Wed Sep 23 17:49:50 2015 |
Koji | Optics | Characterization | More polarizer optics measurement (Summary) | For the Glasgow PBS, the measurement has
been repeated with different size of beams.
In each case, the PBS crystal was |
|
|
35
|
Thu Nov 8 13:24:53 2012 |
Koji | Optics | Characterization | More wedge measurement | A1
Horiz Wedge 0.497
+/- 0.004 deg |
|
|
116
|
Thu Apr 18 11:43:59 2013 |
Koji | General | General | Mounting Glass Bracket Failure | [Jeff, Koji]
- While we were working on the optics
alignment, one of the mounting brackets made |
|
|
124
|
Mon May 13 14:49:35 2013 |
Koji | Mechanics | Characterization | Mounting Glass Bracket still broke with tightenin stress | [Koji / Jeff]
This is the elog about the work on
May 9th. |
|
|
412
|
Thu Jun 23 21:03:33 2022 |
Koji | Facility | General | Moving the small optical table to CAML (TCS Lab) | I've cleared the small optical table
and wondered how to move it out of the room.
Fortunately, the north side of the big table |
|
|
353
|
Tue Apr 23 10:21:12 2019 |
Joe | Optics | Configuration | Moving the spots to the centre of the curved mirrors | [Koji,Philip, Liyuan, Joe]
CM1:
We moved the curved mirrors to |
|
|
75
|
Sat Mar 23 02:32:23 2013 |
Koji | Facility | General | N2 cylinder delivered | Preparation for ionized N2 blow
- 99.9998% N2 cylinder delivered
(ALPHAGAZ 2 grade by AIR LIQUIDE) ALPHAGAZ |
|
|
304
|
Tue Aug 7 15:43:12 2018 |
Koji | Electronics | Characterization | New LLO EOM stuffed | [Rich, Dean, Koji]
Stuffed all inductors for the new
LLO EOM. As the impedances were sensitive |
|
|
71
|
Thu Mar 14 22:18:23 2013 |
Koji | General | General | New loans for the diode test | ALL
returned
Loan
from ATF: |
|
|
301
|
Tue Jul 3 12:07:47 2018 |
Rich Abbott | Electronics | Characterization | Notes on 3rd IFO EOM | Attached please see my notes summarizing
the models for the electrodes and inductors
within the 3rd IFO EOM |
|
|
223
|
Wed Feb 18 21:51:23 2015 |
Koji | General | General | Notes on OMC Transportation Fixtures & Pelican | LLO has one empty OMC transportation fixture.
LHO has one empty OMC transportation
fixture. |
|
|
431
|
Wed Jul 27 23:52:18 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (1) | Parts
check
- D1300052-V3 SN001 is going to |
|
|
434
|
Wed Aug 10 18:42:27 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (4) | [Stephen Koji]
Now we got the C&Bed parts
to continue to work on the cable bracket |
|
|
435
|
Thu Aug 11 15:24:57 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (5) | - The hole size extension
is going forwared now. |
|
|
436
|
Mon Aug 15 21:31:56 2022 |
Koji | General | General | OMC #002 Cable bracket replacement (6) | The cable bracket was successfully
replaced.
Looking from the QPD side |
|
|
438
|
Mon Aug 15 22:43:35 2022 |
Koji | General | General | OMC #002 Delamination repair Part1 (1) | [Stephen Koji]
Checked the delamination
status: |
|
|
439
|
Mon Aug 15 22:49:03 2022 |
Koji | General | General | OMC #002 Delamination repair Part1 (2) | EP30-2
preparation
Two Al foil cups + A sheet |
7x |
|
440
|
Wed Aug 24 02:51:23 2022 |
Koji | General | General | OMC #002 Delamination repair Part1 (3) | Inspection of the bonding on the
suspension interface side. All look good. |
8x |
|
441
|
Wed Aug 24 02:53:46 2022 |
Koji | General | General | OMC #002 Delamination repair Part2 (1) | Inspection of the delaminations in the
optics side |
|
|
443
|
Wed Aug 24 03:20:59 2022 |
Koji | General | General | OMC #002 Delamination repair Part2 (2) | Bonding |
11x |
|
444
|
Wed Aug 24 03:26:43 2022 |
Koji | General | General | OMC #002 Delamination repair Part2 (3) | Inspection
|
8x |
|
415
|
Mon Jul 18 14:20:09 2022 |
Koji | General | General | OMC #002 Plan Portal | ==
Initial Preparation ==
[Done] OMC #002 |
|
|
417
|
Thu Jul 21 02:55:06 2022 |
Koji | General | General | OMC #002 Power Budget after mirror cleaning | o Power Budget after FirstContact
cleaning (2022/07/20)
NPRO ADJ -50 (min) |
|
|
416
|
Tue Jul 19 03:17:56 2022 |
Koji | General | General | OMC #002 Power Budget before mirror cleaning | o Power Budget (2022/07/18)
NPRO ADJ -50 (min)
Fiber incident 62.8mW |
|
|
430
|
Wed Jul 27 10:34:30 2022 |
Koji | General | General | OMC #002 Protective FirstContact Paint | The optical surfaces were coated with FirstContact
to keep them clean / somewhat protected during
the transportation. |
|
|
281
|
Fri Jun 23 01:58:11 2017 |
Koji | Optics | General | OMC #002 Repair - CM1 gluing | [Alena, Koji]
Jun 21: Alena and Koji
worked on gluing of the CM1 mirror on the |
6x |
|
422
|
Fri Jul 22 00:31:17 2022 |
Koji | General | General | OMC #002 backscatter measurement | Measure the power ratio between the forward-propagating
and reverse-propagating beams.
Place a small deflecting |
|
|
426
|
Tue Jul 26 00:01:59 2022 |
Koji | General | General | OMC #002 delamination check 2 | More epoxy delamination check:
DCPD R (Attachment 1):
Found half delaminated |
|
|
437
|
Mon Aug 15 22:06:18 2022 |
Koji | General | General | OMC #002 new cable tie installed | [Stephen Koji]
New cable ties were installed on
the cable pegs attached to the long sides |
|
|
445
|
Wed Aug 24 11:29:47 2022 |
Koji | General | General | OMC #002 ready for shipment | [Stephen Koji]
The OMC #002 is ready for
shipment. |
|
|
478
|
Sat Jan 28 00:38:56 2023 |
Koji | Mechanics | General | OMC #1 cable bracket replacement / OMC #1 repair completed | The AL metal bracket was replaced with
a PEEK version.
Attachments 1/2: Before the replacement. |
|